It has been years since I last used QuickSilver, a quick launch (and so much more) utility for Mac OS X. Despite that, I still keep the icon in my Dock. Well, I accidentally clicked it just now, and before I could quit it, it popped up with a window saying it was downloading an update. And then proceeded to also update several of the base plugins.
I hadn’t even noticed that it had been open sourced in 2006. It was created in June 2003 by Blacktree Software, and received rave reviews. It was quick, unobtrusive, and extensible. Apparently, the project languished between 2006 and 2010. Then, development picked up again last year. I’m not sure when the current version was released.